Figure 4

Doris: (left panel) Estimated normalized directional spectrum S_d(ω,θ)/σ² [Hz⁻¹rad⁻¹] at the storm peak using the Bayesian direct method (BDM) and (right panel) associated angular spreading function \(D(\theta )={\int }_{0}^{\infty }{S}_{d}(\omega ,\theta ){\rm{d}}\omega /{\sigma }^{2}\).